Kathryn Foster 
Downstream [EPUB ebook] 
Claudia and the Science Club Book One

Claudia’s a high school freshman (and a happy science nerd) who trusts facts more than feelings.

Feelings and facts are messing up her science project and her relationship with her friend’s brother.

Claudia and the Science Club solve a local water quality problem that could save a young woman’s life.

Science really is a matter of life and death in this exciting YA novel.